基于动态虚拟权重的自动交换光网络(ASON)域间路由优化  

Optimization of inter-domain routing in automatic switched optical networks using dynamic virtual weight

作　　者：邓宇[1] 张沛[1] 顾畹仪[1] 

机构地区：[1]北京邮电大学光通信与光波技术教育部重点实验室,北京100876

出　　处：《高技术通讯》2008年第11期1106-1111,共6页Chinese High Technology Letters

基　　金：863计划(2006AA01Z244);国家自然科学基金(60602004);教育部新世纪优秀人才支持计划(NCET-05-0112)

摘　　要：在研究利用域到域路由协议(DDRP)实现自动交换光网络(ASON)域间路由的基础上,针对实现过程中星型拓扑汇聚策略带来的等代价路由问题提出了基于动态虚拟权重的域间路由优化方法,并在利用 OPNET Modeler 网络仿真软件搭建的 ASON 域间路由仿真平台上,对传统随机边界节点选择方式和基于动态虚拟权重选择方式进行了仿真对比,验证了所提出的域间路由优化方法具有减小路由代价、降低业务阻塞率和提高网络资源利用率等性能优势。This paper studies the optimal implementation of inter-domain routing in automatic switched optical networks （ASON） using the domain to domain routing protocol （DDRP）, and then proposes a scheme for optimization of inter-domain routing based on dynamic virtual weight, aiming to resolve the equal-cost problem brought by star topology aggregation. The proposed optimization scheme was evaluated and compared with the traditional random gateway node selection scheme by simulation using the OPNET Simulator for inter-domain routing in ASON, and it was concluded from the experiment that the proposed scheme outperformed the traditional scheme in terms of route cost, blocking probability and resource utility.

关 键 词：自动交换光网络(ASON) 域间路由 域到域路由协议 星型拓扑汇聚 动态虚拟权重 随机边界节点选择 

分 类 号：TN929.1[电子电信—通信与信息系统]